fluentd daemonset: do not set arbitrary nodeSelector.

roles/kubernetes-apps/efk/fluentd/templates/fluentd-ds.yml.j2

@@ -54,8 +54,6 @@ spec:
           readOnly: true
         - name: config-volume
           mountPath: "{{ fluentd_config_dir }}"
-      nodeSelector:
-        beta.kubernetes.io/fluentd-ds-ready: "true"
       terminationGracePeriodSeconds: 30
       volumes:
       - name: varlog
@@ -66,4 +64,4 @@ spec:
           path: {{ docker_daemon_graph }}/containers
       - name: config-volume
         configMap:
-          name: fluentd-config
+          name: fluentd-config